What the vulnerability does
01Description
The Hubbub Lite – Fast, Reliable Social Sharing Buttons plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 1.33.1 via deserialization of untrusted input via the 'dpsp_maybe_unserialize' function. This makes it possible for authenticated attackers, with contributor access and above, to inject a PHP Object. No POP chain is present in the vulnerable plugin. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.
Explanation of Vulnerability in Simple Terms
02Summary
Hubbub Lite versions up to 1.33.1 contain a deserialization vulnerability that allows authenticated attackers to execute arbitrary code on the site. The vulnerability requires an attacker with low-level site access and high attack complexity, but successful exploitation grants full control over the WordPress installation. Site administrators should update immediately to a version newer than 1.33.1.
What an attacker can do
03Attacker Capabilities
Run arbitrary code on the site with full access to the database and files.
Potential impact on your site
04Site Impact
Complete site compromise: data theft, malware injection, user account takeover, and defacement.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege account (e.g., subscriber or contributor role) on the site.
Key dates
06Disclosure timeline
April 9, 2024
CVE published
April 8, 2026
Record updated
